I'm really confused why people insist on using three bladed props!?!? I'm not having a go or anything like that it's just a question. They may be quieter but they reduce agility and cut the small flight time in flipping half!!!!! Sure they look cool but that's not really a big thing with quads. Another point is the fact that when you buy the quad they almost always come with a spare set of props as well as the ones on the copter anyway. This means that every time you brake or loose a set of props you have to buy a new set of tri blades. Yes, you have to do it with the normal props but you, overall, have to buy one set less. Again not having a go just wondering if someone could enlighten me?